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像TI的开关电源芯片 TPS54340这样多了个使能端的芯片要怎么用呀？我只是想用这个芯片做一个BUCK电路而已，不想用单片机给使能信号。请问这样的话这个脚可以悬空吗？
Hi
如果你不用到使能控制，可以悬空，因为芯片内部有上拉电流源，所以默认是启动的。
